Malicious PDF — malware analysis report

Static analysis result for SHA-256 1115f8426f379d91…

MALICIOUS

PDF

233.4 KB Created: 2021-03-19 13:05:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc20e1f986d1b393c5d652cb32a0aba3 SHA-1: de2f0be4a1812b352285540156f1494d4bd16389 SHA-256: 1115f8426f379d91ac323124586678688d637486faf7492f18d50f097e53ff87
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of an external URI suggests the document is designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/123?utm_term=minecraft+blast+off+modpack
    • https://ridewavovelomu.weebly.com/uploads/1/3/4/6/134697160/bekafoxox.pdf
    • https://gewavidabu.weebly.com/uploads/1/3/0/7/130775927/duwebum.pdf
    • https://cdn.sqhk.co/wanadujogo/gIU1c5x/csr_classics_glitch.pdf
    • https://cdn.sqhk.co/guzufaseba/GAiiajc/rerakukudilidulogebuwomib.pdf
    • https://guwusupokase.weebly.com/uploads/1/3/1/4/131437041/savekega_fajogipemiwelu_kakojado_suxino.pdf
    • https://vujalonekodi.weebly.com/uploads/1/3/2/7/132712286/xigazujew.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/muvevanepen/breitling_chrono_avenger_m1_e73360_manual.pdf
    • https://uploads.strikinglycdn.com/files/6b8526af-287c-487c-87d4-f8b89b5f36d7/vakawikema.pdf
    • http://tininababa.rf.gd/42256393861.pdf
    • https://s3.amazonaws.com/zumezeviwakiz/69772589395.pdf
    • https://s3.amazonaws.com/dobesogum/parts_of_speech_examples_and_meaning.pdf
    • https://uploads.strikinglycdn.com/files/f9f9b06c-66ae-4f27-a011-50c2c7fa90f8/41304914368.pdf
    • http://wuwemeno.rf.gd/anatomy_drawing_study_guide.pdf
    • http://xusixuxoribixe.rf.gd/primary_hyperparathyroidism_treatment_guidelines.pdf
    • https://uploads.strikinglycdn.com/files/b2d38d5e-6f28-4fdc-8f04-452a058e7932/vufusosimurepujuwo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00034d6b.bin
dd0598dd93d580b0c6629365416aac92913c821c01aeb24bb6ce8d5296398de3
pdf-font-stream PDF embedded font (sfnt) at offset 0x34D6B 5296 bytes
font_01_sfnt_off00035f4c.bin
05552997323338cf168f2437ab52e09cb22289cd233c4b0744fd33c7e920e3d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x35F4C 12348 bytes
font_02_sfnt_off00038949.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x38949 4324 bytes